Hello Adel,
Thank you for your clarification. However, retrieving the invoice data from a specific Google Ads account is not yet supported via Google Ads scripts. Instead, only the given BudgetOrder entity which allows you to retrieve the billing account information in a specific Google Ads account is currently supported via Google Ads scripts.
However if you find it useful to have this kind of functionality within the Google Ads scripts, then I could submit a feature request regarding this. Before I can proceed, could you please provide your business use case (or benefit) with regard to this feature/functionality and sample screenshot of data within the UI that you’re trying to utilize via Ads scripts?
Regards,